Hey Busmaster007,

Happy Birthday!
mine was also on the 19th Jan 18 years your junior, you old fart

Bushmaster007 if you want to get rid of those sights let me know as I would be interested in them...

POP

106 gr. of RL-25 will give that speed from my gun with no pressure signs. I pretty much run out of case capacity first.

I have shot the 378 in a Weatherby. I'm happy that YOU own the gun.

P.S.
Watch your knuckle on the bolt handle. It hurts if you F*#% up!

Jamie

I think it is not physically possible (at safe pressures) no matter how fast your barrel is! At least that is my opinion. I would love to see an Oehler 46 read out on your load.

Jamie,

Are you using a Chrony.

3065 with 300s in the 3775 Ultra is the equaivalent of getting 3550 with 180s in the 300 Ultra.

Mike

I tend to agree with POP.
With selected 300 grainers at max pressure, here is how they stack up in the average rifles if all have 26" barrels:

375 H&H: 2600 fps
375 Weatherby: 2800 fps
375 RUM: 2900 fps
378 Weatherby: 3050 fps

With the CZ 550 you get 5 down and 1 chambered, in 375 H&H or 375 Weatherby. 4 down plus one in the 375 RUM. 3 down plus one in the 378 Weatherby.

Average case capacities, water weight to case mouth level:

375 H&H: 97 grains (Winchester brass)
375 Wby: 111 grains (Weatherby brass)
375 RUM: 120 grains (Remington brass)
378 Wby: 137 grains)(Weatherby brass)

If you use a CZ 550 for the 375 Weatherby, you can seat the bullets out to 3.80" with the right bullet and get an effective case capacity equal to the 375 RUM with 3.6" magazine box.

Use the 3.8" box with a 375 RUM and you get close to 378 Weatherby effective powder capacity, but no cigar.

And you can still shoot the hot 375 H&H ammo in a 375 Weatherby chamber, get lower pressures, lose only 100 fps, with good accuracy, and use the same sight settings, in a good 375 Weatherby.

The straight factory CZ 550 Magnum in 375 H&H feeds the H&H and Weatherby 375's interchangeably, quite well.

Sounds like a no-brainer to me.

Ron,

I agree with you that the 375 Wby/Imp wins the "logical" race.

I think Wby would sell quitea few of them if they were available in the various lower priced Wby Stainless and Synthetic rifles. As it is now the 375 Wby only comes in the very expensive DGR or via Product Upgrade.

My theory is that the 340 Wby is in the cheaper Wbys because making brass for it is seen as much more trouble than making 375 Wby from 375 H&Hs. Thus people might buy the cheaper Wby but still by Wby components. However, if they put the 375 Wby in the cheaper rifle a lot of people would but that instead of the 340 and then head down to the shop and pick up some Winchester 375 H&H cases/ammo.

Product Upgrade becomes very expensive, at least in Australia, because Wby changes the price structure (upwards!!) to the dealer/agent. So the bottom line is that the 375 Wby starts to take on 378 pricing and it just does not have the pizzaz to support such pricing in a Wby rifle.

Mike

Mike,
You got that right! I am sure the bean counter machinations are the reason that Weatherby scrubbed the 375 Wby the first time. There are a lot of undeniable truths about the 375 Weatherby that many just ignore. After all, it is an old and obsolete cartridge, ha ha, ho ho, he he ...

Ron,

The chap in Wby Custom Shop was telling me that the 416 Wby is the main seller of the big three to those who shoot big game. The 378 and 460 are for us roo shooters!!!

I would bet that the majority of 375 Wbys that they sell would be to Wby collectors.

Mike

Mike,
I bet a lot of the 416 Wby sales are also to those collectors that already own the 378 and 460 Wby, and yes a few will have heard of the 375 Wby reincarnation and have to have a Mark V in that too. Gotta fill those gaps in the lineup.

Or could Layne Simpson alone be responsible for 416 Wby sales, after all his word is the gospel, eh?

I just can't see any good reason for a 416 Wby when the 416 Rigby is so handy.

Most serious hunters and practical rifle nuts would prefer the 375 Wby in a CRF. So many 375 H&H's to rechamber, and so little time!

Y'all don't rechamber all your H&H's to Wby. Leave a few 375 H&H's untouched for posterity, and for the gentle folk, ya heah?

Ron,

I am exausted!!!!!!!!!!!

378 is the easy one....just load down

Actually the ideal is the 378 in the Mark V for reliable feeding and...

a 375/416 in CRF for a touch of tradition plus getting the staggered feed to equal the reliability of the whore house!!

By the way, I have yet to figure out why a rimless 416 Rigby with expensive brass and and ammo is a hero compared to 416 Reminton (belted) but a 375 Ultra is a failure compared to 375 H&H.


Mike

Uh oh Mike, you are bringing back thoughts of the 9.5 Tornado aka 375/.338 Lapua Magnum ...

Uncle!!!